We have a 1000tpd FLS kiln with a five-stage preheater. We are having a lot of clinker dust formation which is causing great wear at the kiln hood. What would you recommend to get rid of the clinker dust.

It is difficult to diagnose the problem over the internet, however these problems are often caused by inefficient combustion of the fuel in the main burner, long flames and poor heat flux in the kiln. I suggest you increase the axial primary to the maximum and see if that helps.

I would like to raise question with regard to the impact of strontium (Sr) to EP efficiency. From our experience, there is a negative correlation between Sr concentration to EP efficiency. When Sr increased, dust emission increased too. Our Sr content in limestone rock varies from 183 to 1382mg/kg. Or, do you suspect from another elements such as organic matters as well as high dust resistivity, too?

Your experience with strontium is very interesting and I have not heard of it before. The performance of your ESP will also be affected by organic matter and the resistivity of the dust. The key question then becomes are these variables independent of one-another? I know of no reason why strontium would increase the resistivity of the dust.